示例代码：[code]#include
#include
#include
#include
#include
#include
#define FILENAME "test1"
#define TEXT "Hello world!\n"
int main(void)
{
int r;
struct jfs file;
struct jtrans trans;
struct jfsck_result result;
/* check the file is OK */
jfsck(FILENAME, NULL, &result);
jfsck_cleanup(FILENAME, NULL);
/* and open it */
r = jopen(&file, FILENAME, O_RDWR | O_CREAT | O_TRUNC, 0600, 0);
if (r < 0) {
perror("jopen");
return 1;
}
/* write two "Hello world"s next to each other */
jtrans_init(&file, &trans);
jtrans_add(&trans, TEXT, strlen(TEXT), 0);
jtrans_add(&trans, TEXT, strlen(TEXT), strlen(TEXT));
r = jtrans_commit(&trans);
if (r < 0) {
perror("jtrans_commit");
return 1;
}
/* at this point the file has "Hello world!\nHello world!\n" */
/* now we rollback */
r = jtrans_rollback(&trans);
if (r < 0) {
perror("jtrans_rollback");
return 1;
}
/* and now the file is empty! */
jtrans_free(&trans);
jclose(&file);
return 0;
}[/code]主页：http://blitiri.com.ar/p/libjio/
下载：http://blitiri.com.ar/p/libjio/files/1.02/libjio-1.02.tar.gz
来自:开源中国社区